
ME(w/o STI)-122
Timing Chain Assembly
MECHANICAL
7) Using ST and by turning the crankshaft approximately 200° clockwise, align the alignment marks of crank
sprocket to the positions as shown in the figure.
CAUTION:
• This procedure is required to prevent the valve and piston contacting with each other, by moving
the all pistons to the middle of the cylinders.
• Never turn counterclockwise because the valve and piston may contact. Counterclockwise turn is
allowed only when adjusting precisely the alignment marks, after turning the crank sprocket align-
ment mark clockwise near the position as shown in the figure.
ST 18252AA000 CRANKSHAFT SOCKET
8) Using ST and by turning the intake cam sprocket LH approximately 130° clockwise, align the alignment
marks of intake cam sprocket LH to the positions (zero-lift position) as shown in the figure.
CAUTION:
• After this work, when the intake valve and exhaust valve lift at the same time, the valve heads con-
tact each other and valve stem may bend. Do not turn the intake camshaft LH and exhaust camshaft
LH to the outside of range of zero-lift (in range where it can be turned lightly by hand).
• Perform the operation carefully since the ST comes off easily.
ME-07955
10
ST
15WRX_STI_US_EN.book 122 ページ 2015年2月13日 金曜日 午前11時20分